Oxygen generator Dr. Oxygen is an invitation to comfortable forest bathing for all people. The 99.82% pure oxygen generated from dr. Oxygen is equivalent to the natural oxygen ejected simultaneously by 50 big trees. Dr. Oxygen, a portable oxygen generator, is a breakthrough for fresh air from environmental pollution. Korea and usa patented. As a sort of oxygen therapy, dr. Oxygen contributes to stay you in good shape in usual and even save a precious life in emergency. Oxygen is a source of life. Nevertheless, modern city men suffer from various illnesses, especially because of oxygen scarcity symptom due to the lack of oxygen in the air. Moreover, the daily increasing air pollution aggravates the oxygen scarcity. We can manage to live a healthy life with over 20% oxygen density in the air. Unfortunately, however, modern men have no choice but to breathe the air with only 17% - 18% oxygen density due to the serious air pollution of the city area. So, it is never an exaggeration to say every modern ailment stems from this oxygen scarcity. 1 full set (1 generator + 2 face masks + 30 packs of powder a (5g per pack) and powder b (90g per pack)